YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.35 | 29.00 | 33.67 | j | ||
1969 | 28.11 | 30.16 | 36.50 | a | 43.60 | 55.81 | 59.17 | a | 66.45 | b | 65.25 | i | 59.75 | 44.06 | 42.43 | 33.92 | 45.45 | a | ||||||||
1970 | 33.66 | 39.38 | 37.68 | 38.55 | 52.95 | 62.03 | 68.74 | 67.05 | 55.58 | 47.69 | 39.78 | 27.61 | 47.56 | |||||||||||||
1971 | 31.42 | 34.19 | a | 33.63 | 41.37 | 49.58 | 55.52 | 67.25 | a | 68.85 | 55.42 | 44.24 | 37.43 | 25.27 | 45.35 | |||||||||||
1972 | 26.42 | 34.93 | 42.73 | 39.66 | a | 53.66 | 60.60 | 67.42 | 65.90 | b | 54.83 | 48.05 | 35.83 | 25.11 | 46.26 | |||||||||||
1973 | 29.89 | 36.73 | 34.94 | 44.57 | 55.65 | 60.27 | 67.71 | 64.85 | 58.13 | 47.77 | 35.00 | 34.55 | 47.50 | |||||||||||||
1974 | 28.47 | 32.91 | 37.26 | 41.98 | 49.71 | 63.40 | 64.72 | a | 65.37 | 63.62 | 49.50 | 40.22 | 30.93 | a | 47.34 | |||||||||||
1975 | 29.55 | a | 30.70 | 33.92 | a | 35.62 | 50.40 | 57.18 | 66.16 | 61.82 | 62.53 | 45.65 | 36.18 | 34.90 | 45.38 | |||||||||||
1976 | 33.08 | 34.21 | 33.70 | a | 41.40 | 53.18 | 55.57 | 66.13 | 59.08 | 59.70 | 50.72 | a | 44.42 | 34.85 | a | 47.17 | ||||||||||
1977 | 25.34 | 38.96 | 33.92 | 47.45 | 44.81 | b | 64.22 | 66.03 | 68.88 | a | 56.47 | 49.78 | b | 37.75 | 34.52 | 47.34 | ||||||||||
1978 | 35.97 | 36.68 | 43.72 | a | 40.55 | 48.32 | a | 58.88 | 65.61 | 63.00 | a | 54.05 | 53.00 | 35.92 | 26.63 | 46.86 | ||||||||||
1979 | 28.97 | 32.59 | 40.84 | 42.83 | 53.84 | 59.58 | 67.10 | 62.77 | 62.27 | 51.73 | 36.34 | b | 35.62 | a | 47.87 | |||||||||||
1980 | 33.18 | 39.62 | 35.55 | a | 45.63 | 49.69 | 53.10 | 66.13 | 61.68 | a | 58.25 | 50.82 | 40.13 | 36.84 | 47.55 | |||||||||||
1981 | 36.82 | a | 36.04 | 39.30 | h | 47.63 | g | 49.77 | 57.68 | b | 64.43 | a | 67.56 | 59.30 | 45.69 | 39.88 | q | 35.52 | 50.31 | c | ||||||
1982 | 26.74 | 33.30 | 35.07 | a | 39.05 | 51.10 | b | 58.75 | 63.80 | a | 64.93 | b | 53.43 | 46.18 | 34.23 | 29.21 | c | 44.65 | ||||||||
1983 | 35.14 | b | 37.23 | b | 38.15 | 39.95 | 53.11 | 56.17 | 61.06 | 65.14 | b | 57.82 | 50.72 | a | 35.09 | a | 30.52 | a | 46.67 | |||||||
1984 | 34.21 | 34.80 | a | 40.05 | 41.42 | 52.75 | a | 55.64 | b | 68.24 | 65.77 | a | 57.48 | a | 42.06 | 33.91 | c | 26.29 | 46.05 | |||||||
1985 | 29.31 | b | 32.76 | a | 34.20 | d | 48.47 | a | 50.63 | 62.45 | a | 69.52 | 63.13 | 52.62 | 46.08 | 29.67 | 32.57 | a | 45.95 | |||||||
1986 | 40.40 | 38.35 | a | 43.92 | 43.30 | 51.88 | a | 63.57 | 62.76 | 68.85 | 51.73 | 49.80 | a | 38.68 | 33.85 | 48.93 | ||||||||||
1987 | 28.55 | 35.88 | 38.26 | 49.60 | 54.21 | 63.62 | a | 60.92 | 65.94 | 60.33 | a | 55.79 | 39.83 | 29.19 | 48.51 | |||||||||||
1988 | 29.06 | 37.33 | 39.18 | a | 46.52 | 50.80 | c | 60.09 | b | 68.23 | a | 67.84 | b | 59.38 | 56.76 | 36.72 | a | 32.36 | c | 48.69 | ||||||
1989 | 25.66 | 26.15 | a | 38.90 | 48.76 | a | 48.80 | c | 60.80 | 63.65 | 61.03 | a | 57.39 | c | 46.89 | 39.17 | 35.02 | a | 46.02 | |||||||
1990 | 32.29 | 30.50 | 41.02 | a | 50.09 | a | 50.02 | a | 57.82 | 68.25 | a | 64.63 | a | 61.50 | 48.82 | 36.57 | 24.52 | a | 47.17 | |||||||
1991 | 32.58 | 42.57 | 34.82 | a | 40.45 | a | 46.35 | 55.75 | b | 68.16 | 65.97 | a | 62.98 | 51.61 | 39.52 | 33.52 | a | 47.86 | ||||||||
1992 | 34.79 | 40.14 | 42.92 | 48.03 | 58.55 | 60.50 | b | 64.90 | 67.57 | b | 59.03 | a | 50.48 | a | 36.93 | a | 25.92 | 49.15 | ||||||||
1993 | 25.98 | 29.70 | 41.12 | a | 41.77 | 53.07 | b | 55.83 | a | 58.05 | 61.48 | 58.60 | 50.23 | 33.97 | 30.89 | 45.06 | ||||||||||
1994 | 35.79 | 32.59 | a | 43.05 | 46.02 | 53.27 | a | 58.35 | 70.18 | 64.80 | c | 61.18 | b | 46.02 | b | 28.64 | b | 29.65 | a | 47.46 | ||||||
1995 | 35.20 | c | 41.96 | a | 37.28 | f | 40.77 | s | 49.22 | o | 52.75 | v | 63.50 | y | ----- | z | ----- | z | 49.00 | v | 44.50 | w | 38.36 | x | 38.58 | j |
1996 | 33.85 | u | 40.70 | x | ----- | z | 43.88 | v | 49.50 | x | ----- | z | ----- | z | ----- | z | ----- | z | 48.06 | w | 41.12 | v | 35.39 | v | ----- | z |
1997 | 34.10 | u | 32.56 | t | ----- | z | 44.89 | u | 54.62 | s | 55.57 | w | 65.83 | v | ----- | z | ----- | z | 50.04 | r | 42.12 | r | 34.11 | q | ----- | z |
1998 | 34.12 | r | 34.25 | r | 42.62 | o | 42.74 | m | 45.23 | p | 55.44 | m | 69.12 | o | 68.50 | s | 63.24 | m | 46.79 | n | 35.71 | r | 33.85 | u | ----- | z |
1999 | 37.28 | v | 29.79 | u | 38.31 | w | 39.73 | s | 51.50 | v | 56.56 | u | 64.32 | t | 66.81 | w | 60.55 | t | 51.11 | v | 42.46 | r | 33.53 | p | ----- | z |
2000 | 32.76 | n | 36.88 | p | 37.69 | o | 50.73 | s | 50.03 | p | 62.92 | l | 64.70 | p | 68.60 | p | 58.53 | n | 46.05 | t | 35.71 | p | 36.10 | u | ----- | z |
2001 | 33.44 | v | 31.80 | m | 42.17 | k | 48.11 | u | 55.85 | u | 60.30 | t | 65.79 | s | 68.19 | r | 60.91 | s | 49.58 | m | 41.46 | q | 31.08 | r | ----- | z |
2002 | 28.91 | n | 39.28 | l | 39.87 | l | 42.79 | m | 49.83 | m | 63.31 | q | 69.88 | n | 63.61 | m | 58.77 | s | 44.34 | l | 40.69 | q | 34.53 | o | ----- | z |
2003 | 37.88 | o | 33.66 | l | 39.15 | n | 39.15 | m | ----- | z | 62.07 | o | 75.00 | q | 66.46 | s | 62.47 | m | 53.95 | t | 35.12 | r | 35.58 | s | ----- | z |
2004 | 33.18 | t | 34.68 | r | 44.47 | p | 45.69 | q | 51.94 | n | 59.76 | m | 70.14 | q | 66.03 | o | 57.50 | q | 48.80 | u | 37.23 | q | 33.53 | m | ----- | z |
2005 | 34.03 | m | 39.30 | r | 41.55 | k | 43.12 | r | 49.44 | n | 57.53 | n | 70.68 | t | 67.34 | o | 55.31 | q | 49.88 | o | 36.87 | o | 31.81 | o | ----- | z |
2006 | 34.03 | n | 34.39 | n | 32.78 | m | 42.46 | q | 53.06 | w | 58.75 | t | 69.45 | t | 63.03 | o | 60.88 | r | 48.77 | t | 40.12 | v | 37.50 | x | ----- | z |
2007 | 27.44 | w | 32.67 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.35 | 35.20 | 38.20 | 43.46 | 51.61 | 59.10 | 65.83 | 64.96 | 58.21 | 48.85 | 37.03 | 31.07 | 47.01 | |||||||||||||
S.D. | 3.95 | 3.97 | 3.50 | 3.88 | 2.99 | 3.01 | 2.86 | 2.67 | 3.24 | 3.47 | 3.46 | 3.80 | 1.23 | |||||||||||||
SKEW | 0.25 | -0.13 | 0.20 | 0.10 | -0.04 | 0.02 | -0.92 | -0.32 | -0.26 | 0.31 | -0.39 | -0.28 | -0.16 | |||||||||||||
MAX | 40.40 | 42.57 | 43.92 | 50.09 | 58.55 | 64.22 | 70.18 | 68.88 | 63.62 | 56.76 | 44.42 | 36.84 | 49.15 | |||||||||||||
MIN | 25.34 | 26.15 | 33.63 | 35.62 | 44.81 | 53.10 | 58.05 | 59.08 | 51.73 | 42.06 | 28.64 | 24.52 | 44.65 | |||||||||||||
YRS | 27 | 27 | 25 | 25 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 27 | 24 |